LED/laser photoactivation enhances the whitening efficacy of low concentration hydrogen peroxide without microstructural enamel changes

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorCosta, Joatan Lucas de Sousa Gomes-
Autor(es): dc.creatorBesegato, João Felipe-
Autor(es): dc.creatorZaniboni, Joissi Ferrari-
Autor(es): dc.creatorKuga, Milton Carlos-
Data de aceite: dc.date.accessioned2025-08-21T15:32:43Z-
Data de disponibilização: dc.date.available2025-08-21T15:32:43Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2021-11-30-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.pdpdt.2021.102511-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/231590-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/231590-
Descrição: dc.descriptionBACKGROUND: The association of low concentration hydrogen peroxide (HP) and a light source has been widely used to achieve efficient bleaching. We investigated the colorimetric and microstructural changes of bovine enamel bleached with 6% HP associated or not with a hybrid light source system of violet light and laser (LED/laser). METHODS: Twenty bovine crowns were used to obtain specimens of 7 × 7 × 2 mm. Then, they were randomized in two groups (n=10): 6% HP and 6% HP + LED/laser. After staining with dark tea solution, three bleaching sessions were performed. Colorimetric evaluation (∆L*, ∆a*, ∆b*, ∆E00 [CIEDE2000] and WID) after 24 hours of each session and 7 days after the final bleaching session was performed. Enamel Vickers microhardness at baseline, 24 hours and 7 days after the last bleaching session were also evaluated. Two-way repeated measures ANOVA and Bonferroni post-test was used at a significance level of 5%. RESULTS: 6% HP and 6% + HP LED/laser showed satisfactory bleaching results. The group photoactivated showed higher WID values (p<0.05). Differences between groups were observed for ∆E00, ∆L* and ∆a* (p<0.05), except for ∆b* (p>0.05). Intra-group differences were also found (p<0.05). Regarding microhardness, no inter or intra-group differences were observed (p>0.05). CONCLUSIONS: The photoactivation with LED/laser enhanced the whitening efficacy of 6% HP compared to the group without photoactivation. Thus, the LED/laser activation appears to be a good option when using low concentration HP-based agents. In addition, both bleaching protocols did not cause changes on enamel microhardness.-
Descrição: dc.descriptionDepartment of Restorative Dentistry, School of Dentistry, Araraquara, São Paulo State University - UNESP, 3rd floor, Humaitá Street, 1680 - Centro, Mail Box: 331, Araraquara, São Paulo 14801-903, Brazil-
Formato: dc.format102511-
Idioma: dc.languageen-
Relação: dc.relationPhotodiagnosis and photodynamic therapy-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectColor change-
Palavras-chave: dc.subjectDental bleaching-
Palavras-chave: dc.subjectHydrogen peroxide-
Palavras-chave: dc.subjectLaser-
Palavras-chave: dc.subjectLED-
Palavras-chave: dc.subjectMicrohardness-
Título: dc.titleLED/laser photoactivation enhances the whitening efficacy of low concentration hydrogen peroxide without microstructural enamel changes-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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